CHART OF THE DAY: Google is The Least Diversified Business In Tech

He calls it the "Eggs In One Basket" index, because it charts out the largest source of revenue as a percentage for all the major tech companies. (Profits would be a different story altogether.)

Google gets over 90% of its revenue from one source: Advertising. The next closest is Amazon with product sales. But, Amazon's product sales are a mix of goods, so it's not exactly the same as relying on just advertising.

For now, this isn't a big problem for Google. The online ad market is still growing, and Google can capture a lot of the market. But, if things were to change, or advertising were to slow down, then look out.